Assault-defence slider

Slider(polzunok - rus.) is official name of the installation. It can be pull by tank or tractor and installed in the trenches upon wooden basements. These sliders were made at Izhorsky plant in Leningrad in 1942. Metal for construction was taken from unfinished ironclads. The installations were digged out at Karelian Isthmus and transferred to the museum in 2002.